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59 lines
3 KiB
C++
59 lines
3 KiB
C++
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// boost/detail/bitmask.hpp ------------------------------------------------//
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// Copyright Beman Dawes 2006
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// Distributed under the Boost Software License, Version 1.0
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// http://www.boost.org/LICENSE_1_0.txt
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// Usage: enum foo { a=1, b=2, c=4 };
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// BOOST_BITMASK( foo )
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//
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// void f( foo arg );
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// ...
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// f( a | c );
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//
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// See [bitmask.types] in the C++ standard for the formal specification
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#ifndef BOOST_BITMASK_HPP
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#define BOOST_BITMASK_HPP
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#include <boost/config.hpp>
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#include <boost/cstdint.hpp>
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#define BOOST_BITMASK(Bitmask) \
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\
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inline BOOST_CONSTEXPR Bitmask operator| (Bitmask x , Bitmask y ) \
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{ return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \
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| static_cast<boost::int_least32_t>(y)); } \
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\
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inline BOOST_CONSTEXPR Bitmask operator& (Bitmask x , Bitmask y ) \
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{ return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \
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& static_cast<boost::int_least32_t>(y)); } \
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\
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inline BOOST_CONSTEXPR Bitmask operator^ (Bitmask x , Bitmask y ) \
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{ return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \
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^ static_cast<boost::int_least32_t>(y)); } \
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\
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inline BOOST_CONSTEXPR Bitmask operator~ (Bitmask x ) \
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{ return static_cast<Bitmask>(~static_cast<boost::int_least32_t>(x)); } \
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\
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inline Bitmask & operator&=(Bitmask& x , Bitmask y) \
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{ x = x & y ; return x ; } \
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\
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inline Bitmask & operator|=(Bitmask& x , Bitmask y) \
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{ x = x | y ; return x ; } \
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\
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inline Bitmask & operator^=(Bitmask& x , Bitmask y) \
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{ x = x ^ y ; return x ; } \
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\
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/* Boost extensions to [bitmask.types] */ \
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\
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inline BOOST_CONSTEXPR bool operator!(Bitmask x) \
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{ return !static_cast<int>(x); } \
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\
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inline BOOST_CONSTEXPR bool bitmask_set(Bitmask x) \
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{ return !!x; }
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#endif // BOOST_BITMASK_HPP
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